关于潜伏期的流行病学意义，哪一项是错误的（） A.确定易感人群 B.估计流行特征 C 发布时间：2017-08-27 06:06 │ 来源：www.tikuol.com 题型：单项选择题 A1型题 问题： 关于潜伏期的流行病学意义，哪一项是错误的（）A.确定易感人群B.估计流行特征C.决定预防措旖D.追踪传染源E.评价预防措施效果
题型：单项选择题 A1型题 阅读下列短文，选择正确的答案。 All the cities are quite the same. Living in a modern Australian city is not very different from living in an American city. But there are some differences on farms. In many parts of the world, farmers and their families live in villages or towns. In the United States, eachfarm family lives in its own fields. Usually their neighbors live far away. It's hard for them to see each other onweekdays. Their children take school buses to the nearest schools. These schools are only for the farm familiesin this area (地区). In some areas, there are small schools for a few farm families,and the children walk to schools. Life keeps changing for everyone. So do farmers. Today there are cars, good roads, radios, television sets and there are modern machines for farming. All of these are changing farm life.1. Living in a modern Australian city is almost living in an American city.[ ]A. different from B. comfortable like C. the same to D. the same as2. Usually farm families live in .[ ]A. big cities B. the countryC. the island D. every town 3. The farmers in can visit each other easily on weekdays．[ ]A. the world B. AmericaC. AustraliaD. the United States 4. How do the farmers' children go to school?[ ]A. They ride their bikes to schools. B. They only walk to schools. C. They can go to schools in a car. D. They can take school buses or walk to schools.5. What about the farmers' life now?[ ]A. Their life is poor. B. Their life is changing. C. They don't like their life. D. Their life is comfortable. 查看答案
题型：单项选择题 A1型题 对检验批质量验收不合格的处理，以下说法正确的是______。A．检验批验收时，任何缺陷都应该推倒重来B．检验批验收时，严重的缺陷可通过翻修或更换器具、设备予以解决后重新进行验收C．当检测鉴定达不到设计要求、但经原设计单位核算仍能满足结构安全和使用功能的检验批，也不能予以验收D．通过返修或加固后处理仍不能满足安全使用要求的分部工程，严禁验收 查看答案